Affiliation: | 1. Department of Otolaryngology, National Taiwan Normal University, Taipei, Taiwan, R.O.C.;2. School of Public Health, National Defense Medical Center, National Taiwan Normal University, Taipei, Taiwan, R.O.C.;3. Department of Health Education, National Taiwan Normal University, Taipei, Taiwan, R.O.C.;4. Department of Surgery, Tri-Service General Hospital, National Taiwan Normal University, Taipei, Taiwan, R.O.C. |